I have driven many miles in the States, and I reckon you have better drivers on the whole, calmer. I think the congestion here has something to do with it, you can never find a bit of open road.
The crop circles are made by aliens, didn't ya know, cos they've nothing better to do than come to earth and play with our crops.
Of course they could really be made by aliens, we have a lot of Americans over here
G